參數資料
| 型號： | XRT83VSH38IB |
| 廠商： | Exar Corporation |
| 文件頁數： | 26/76頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU SH T1/E1/J1 8CH 225BGA |
| 標準包裝： | 84 |
| 類型： | 線路接口裝置（LIU） |
| 驅動器/接收器數： | 8/8 |
| 規(guī)程： | T1，E1，J1 |
| 電源電壓： | 3.14 V ~ 3.47 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 225-BGA |
| 供應商設備封裝： | 225-BGA（19x19） |
| 包裝： | 托盤 |
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XRT83VSH38
29
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.1.0
4.3
Transmit Jitter Attenuator
The XRT83VSH38 LIU is ideal for multiplexer or mapper applications where the network data crosses multiple
timing domains. As the higher data rates are de-multiplexed down to T1 or E1 data, stuffing bits are typically
removed which can leave gaps in the incoming data stream.
The transmit path has a dedicated jitter
attenuator with a 32-Bit or 64-Bit FIFO that is used to smooth the gapped clock into a steady T1 or E1 output.
The maximum gap width of the 8-channel LIU is shown in Table 9.
NOTE: If the LIU is used in a loop timing system, the receive path has a dedicated jitter attenuator. See the Receive
Section of this datasheet.
4.4
TAOS (Transmit All Ones)
The XRT83VSH38 has the ability to transmit all ones on a per channel basis by programming the appropriate
channel register. This function takes priority over the digital data present on the TPOS/TNEG inputs. For
example: If a fixed "0011" pattern is present on TPOS in single rail mode and TAOS is enabled, the transmitter
will output all ones. In addition, if digital or dual loopback is selected, the data on the RPOS output will be
equal to the data on the TPOS input. Figure 18 is a diagram showing the all ones signal at TTIP and TRING.
FIGURE 18. TAOS (TRANSMIT ALL ONES)
4.5
Transmit Diagnostic Features
In addition to TAOS, the XRT83VSH38 offers diagnostic features for analyzing network integrity such as
ATAOS and QRSS on a per channel basis by programming the appropriate registers.
These diagnostic
features take priority over the digital data present on TPOS/TNEG inputs. The transmitters will send the
diagnostic code to the line and will be maintained in the digital loopback if selected.
When the LIU is
responsible for sending diagnostic patterns, the LIU is automatically placed in the single rail mode.
4.5.1
ATAOS (Automatic Transmit All Ones)
If ATAOS is selected by programming the appropriate global register, an AMI all ones signal will be transmitted
for each channel that experiences an RLOS condition. If RLOS does not occur, the ATAOS will remain inactive
until an RLOS on a given channel occurs. A simplified block diagram of the ATAOS function is shown in
TABLE 9: MAXIMUM GAP WIDTH FOR MULTIPLEXER/MAPPER APPLICATIONS
FIFO DEPTH
MAXIMUM GAP WIDTH
32-Bit
9 UI
64-Bit
9 UI
TAOS
111
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相關代理商/技術參數 |
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| XRT83VSH38IB-F | 功能描述:外圍驅動器與原件 - PCI 8 Channel Short-Haul RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT83VSH38IB-F | 制造商:Exar Corporation 功能描述:T1/E1 LIU IC |
| XRT84L38 | 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 FRAMER |
| XRT84L38_06 | 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 FRAMER |
| XRT84L38IB | 功能描述:網絡控制器與處理器 IC 8 Ch T1/E1 Framer RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
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